Test-Retest Reliability of the Star Excursion Balance Test in Primary School Children

AbstractObjectiveTo evaluate a web-based nutritional knowledge questionnaire for primary-school children.DesignChildren's nutritional knowledge was assessed in five domains: healthy choices (twenty-seven items), estimated recommended portions/servings (eight items), nutrient content (five items), main food function (five items) and categorization of food items (eight items).SettingThe questionnaires were completed in school.SubjectsA convenience sample of 576 Belgian children (aged 7–12 years) from fourteen primary schools completed the questionnaire once, 386 completed the questionnaire twice.ResultsHealthy choices could be answered correctly by 73 % of the children, nutrients by 59 %, food categorization by 49 %, main function by 38 % and portion estimation by 36 %. Children's test–retest intra-class correlations were 0·75 for healthy choices, 0·33 for nutrients, 0·61 for food categorization, 0·44 for main function, 0·47 for portion estimation and 0·76 for the total scale. The intra-class correlation was lower in the youngest age group (grade 2: 0·51, grade 4: 0·65, grade 6: 0·66). The total score was significantly lower in the retest. The instrument was in general positively evaluated by the children.ConclusionsThe instrument is a promising, practical, inexpensive tool with acceptable test–retest reliability in fourth and sixth graders.

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Validity, Reliability, and Usefulness of My Jump 2 App for Measuring Vertical Jump in Primary School Children

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph17103708 ◽

2020 ◽

Vol 17 (10) ◽

pp. 3708 ◽

Cited By ~ 2

Author(s):

Špela Bogataj ◽

Maja Pajek ◽

Vedran Hadžić ◽

Slobodan Andrašić ◽

Johnny Padulo ◽

...

Keyword(s):

Primary School ◽

School Children ◽

Vertical Jump ◽

Total Sample ◽

Cell System ◽

Primary School Children ◽

Systematic Bias ◽

Jump Performance ◽

Retest Reliability ◽

Test Retest Reliability

There is a persistent need in sport science for developing a measuring tool that is affordable, portable, and easy to use. We aimed to examine the concurrent validity and test–retest reliability of the My Jump 2 app compared to a validated OptoJump instrument for measuring jump performance during the squat jump (SJ), countermovement jump (CMJ), and CMJ free arms (CMJAM) in primary school children. A total of 48 participants (11–14 years age), volunteered to participate in this research. The jumps were recorded with a validated OptoJump photoelectric cell system and a concurrent device (iPhone X through My Jump 2 app) at the same time. The participants repeated the testing procedure after two weeks to assess the reliability of the measurements (ICC). Systematic bias between sessions and tools was evaluated using the paired samples t-test and Bland and Altman analysis. High test–retest reliability (ICC > 0.89) was observed for all measures’ in-between conditions. Very large correlations in the total sample were observed between the My Jump 2 app and OptoJump for SJ (r = 0.97, p = 0.001), CMJ (r = 0.97, p = 0.001), and CMJAM (r = 0.99, p = 0.001). Bland and Altman’s plot depicting limits of agreement for the total sample between the OptoJump and My Jump 2 show that the majority of data points are within the 95% CIs. The results of this study suggest that My Jump 2 is a valid, reliable, and useful tool for measuring jump performance in primary school children.

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Hip- and Thigh-Muscle Activation During the Star Excursion Balance Test

Journal of Sport Rehabilitation ◽

10.1123/jsr.20.4.428 ◽

2011 ◽

Vol 20 (4) ◽

pp. 428-441 ◽

Cited By ~ 36

Author(s):

Beth Norris ◽

Elaine Trudelle-Jackson

Keyword(s):

Outcome Measures ◽

Repeated Measures ◽

Muscle Activation ◽

Neuromuscular Control ◽

Repeated Measure ◽

Thigh Muscle ◽

Balance Test ◽

Retest Reliability ◽

Star Excursion Balance Test ◽

Test Retest Reliability

Context:The Star Excursion Balance Test (SEBT) is often used to train and assess dynamic balance and neuromuscular control. Few studies have examined hip- and thigh-muscle activation during the SEBT.Objective:To quantify hip- and thigh-muscle activity during the SEBT.Design:Repeated measures.Setting:Laboratory.Participants:22 healthy individuals, 11 men and 11 women.Methods:EMG measurements were taken as participants completed 3 trials of the anterior (A), medial (M), and posteromedial (PM) reach directions of the SEBT.Main Outcome Measures:Mean EMG data (% maximal voluntary isometric contraction) from the gluteus medius (Gmed), gluteus maximus (Gmax), and vastus medialis (VM) were measured during the eccentric phase of each SEBT reach direction. Test–retest reliability of EMG data across the 3 trials in each direction was calculated. EMG data from each muscle were compared across the 3 reach directions.Results:Test–retest reliability ranged from ICC3,1 values of .91 to .99. A 2-way repeated-measure ANOVA revealed a significant interaction between muscle activation and reach direction. One-way ANOVAs showed no difference in GMed activity between the A and M directions. GMed activity in the A and M directions was greater than in the PM direction. There was no difference in GMax and VM activity across the 3 directions.Conclusion:GMed was recruited most effectively when reaching was performed in the A and M directions. The A, M, and PM directions elicited similar patterns of muscle recruitment for the GMax and VM. During all 3 SEBT directions, VM activation exceeded the 40–60% threshold suggested for strengthening effects. GMed activity also exceeded the threshold in the M direction. GMax activation, however, was below the 40% threshold for all 3 reach directions, suggesting that performing dynamic lower extremity reaching in the A, M, and PM directions may not elicit strengthening effects for the GMax.

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